公文一般用（）排正文。
A.黑体
B.宋体
C.仿宋体
D.楷体
参考答案：C
Mr. Hu can _______ English very _______. [ ]
A. say, good
B. say, well
C. speak, good
D. speak, well
（3a2）3+（a2）2-a2=______．
